550661221652 has 24 divisors (see below), whose sum is σ = 996962752800. Its totient is φ = 265816169696.

The previous prime is 550661221631. The next prime is 550661221709. The reversal of 550661221652 is 256122166055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405523 + ... + 1754085.

It is an arithmetic number, because the mean of its divisors is an integer number (41540114700).

Almost surely, 2^550661221652 is an apocalyptic number.

It is an amenable number.

550661221652 is a deficient number, since it is larger than the sum of its proper divisors (446301531148).

550661221652 is a wasteful number, since it uses less digits than its factorization.

550661221652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362215 (or 362213 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 550661221652 in words is "five hundred fifty billion, six hundred sixty-one million, two hundred twenty-one thousand, six hundred fifty-two".